Robtex

Up: 103.10.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 103.10.52.0/23
Down right: 103.10.54.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.10.52.5	A+PTR	gt-sr-frm-01.drikict.net
103.10.52.5	A+PTR	smtp5.drikict.net
103.10.52.12	A+PTR	dag.drikict.net
103.10.52.50	A	fw2.asrotex.com
103.10.52.52	PTR	mail.asrotex.com
103.10.52.58	A	fw3.asrotex.com
103.10.52.66	A+PTR	fw4.asrotex.com
103.10.52.74	PTR	assigned-for-regional-consumer-asn55828.drikict.net
103.10.52.83	PTR	virtual146.drikict.net
103.10.52.83	A	ieee.org.bd
103.10.52.83	A	webmail.xfactorbd.com
103.10.52.84	PTR	im.tmtgbd.com
103.10.52.84	PTR	m.tmtgbd.com
103.10.52.84	PTR	smtp02.tmtgbd.com
103.10.52.86	A	observe.drikict.net
103.10.52.87	A	emm.drikict.net
103.10.52.88	A+PTR	ticketing.drikict.net
103.10.52.88	A	maatrik.com
103.10.52.88	A	mail.maatriksoft.com
103.10.52.178	A+PTR	mail.auragroup.com.bd
103.10.52.178	A	auragroup.com.bd
103.10.52.189	A	miraclesearch.org
103.10.52.197	A	www.esheba.cnsbd.com
103.10.52.206	PTR	mail.protishabda.com
103.10.53.26	PTR	almuslimgroup.net
103.10.53.92	PTR	jaysonbd.com
103.10.53.92	A+PTR	mail.jaysonbd.com
103.10.53.93	PTR	www.jaysonbd.com
103.10.53.93	A	jaysonbd.com
103.10.53.110	A	dns.pwd.gov.bd
103.10.53.131	A	www.pwd.gov.bd
103.10.53.220	A+PTR	mail.amgbd.com
103.10.54.98	A	dos-2.com
103.10.54.99	A	www.akashtech.com
103.10.54.99	A	akashtech.com
103.10.54.185	A	mail.icthub.net
103.10.54.214	PTR	mail.fourthdimensionbd.com
103.10.55.82	A	afl.asrotex.com
103.10.55.82	A	erp.asrotex.com
103.10.55.84	A+PTR	mail.logicsoftbd.com
103.10.55.85	A	afl.asrotex.com
103.10.55.85	A	fw1.asrotex.com
103.10.55.86	A+PTR	mail.asrotex.com
103.10.55.172	A	mail.uddipan.org
103.10.55.188	A	akashtech.com